Apparatus for spinning artificial filaments



Jan. 16, 1951 R. w. STANLEY 2,538,233

' APPARATUS FOR spmzmc ARTIFICIAL'FILAMENTS Filed Aug. 14, 1946 lNV OR.

Patented Jan. 16, 1951 APPARATUS FOR SPINNING ARTIFICIAL FILAMEN TS Richard W. Stanley, Drexel Hill, Pa., asslgnor to American Viscose Corporation, Wilmington, Del., a corporation of Delaware Application August 14, 1946, Serial No. 690,363

14 Claims. 1

This invention relates to improved apparatus for spinning artificial filaments and is particularly concerned with apparatus of the type which may be used for continuously spinning, stretching, after-treating with liquids to wash, bleach, lubricate, etc., drying and collecting filaments. This application is a continuation in part of my application Serial No. 530,681, filed April 18, 1944, now abandoned.

Many arrangements of the various devices needed for continuously spinning, stretching, treating, drying, and collecting have been heretofore proposed but they are generally characterized by one or more disadvantages, such as requiring an inordinate amount of floor space; inefilcient use of treating liquids, and especially of the coagulating liquid, inconvenient disposition of the various devices which may need the attention of the operators, and so on.

It is an object of the present invention to provide an improved continuous spinning machine in which the various operations are performed in a highly efiicient manner with respect to the utilization of space, liquids and labor. Other objects and advantages will be apparent from the drawing and the description thereof hereinafter.

In the drawing,

Figure 1 is a transverse cross-section of a machine embodying the invention,

Figure 2 is a front elevation thereof, partially in cross-section,

Figure 3 is a plan view thereof, and

Figure 4 is a plan view of certain of the driving connections.

As illustrated, the machine occupies three working decks or floor levels designated A, B and C from top to bottom, though two or more such decks may be used instead. In general, the spinning and stretching is performed on the top deck A, liquid-treatment is performed on the middle deck B and drying and collecting is accomplished on the lowermost deck C. This division of operations is the most preferable, but it is to be understood that it is capable of some variation. Thus the drying may be shifted to the middle deck B or one or more of the liquid treatments may be performed on the lowest deck C. In special instances where only one or two liquid treatments are desired or necessary for a particular type of yarn, it is possible to combine the sections of the machine shown in decks B and C in the drawing into a single deck.

' In accordance with the general aspects of the invention, the spinning machine comprises twO 2 working faces throughout all sections thereof. In order to economize space and at the same time provide eillcient operation and convenience to the operators, each of the multiple-filament threads formed in the spinning bath on one side of the machine passes above the bath through one of a plurality of substantially parallel horizontal paths crossing an intermediate vertical plane of the machine at an acute angle, preferably less stantially direct vertical super-position.

than 45, then descends substantially vertically in a zone between the central plane and the other working face to the liquid treating, drying and collecting devices which are arranged in sub- The travel of the filaments is controlled by threadadvancing devices disposed at each end of the horizontal path and projecting substantially at right angles to the vertical plane containing the path so that special auxiliary guides are unnecessary to direct the filaments to and from the thread-advancing devices. Advantageously, the

= filaments may pass through a liquid treating bath as they travel across the intermediate plane of and efllcient to tend. In a preferred but more specific embodiment, each working face is provided with a spinning bath and the filaments formed in one spinning bath cross over to the other side of the machine in horizontal paths which alternate with, are substantially parallel to, and lie in approximately the same plane as that which contains the paths of the filaments proceeding from the'bath on the other side, all of the paths crossing the central vertical plane of the machine at an acute angle, preferably less than 45, and then the filaments descend substantially vertically to the after-treating section on the side of the machine other than that from which they originated.

Other relationships between the various parts of the machine which co-operate to provide an exceptionally .efllcient continuous machine will appear in the more specific description hereinafter.

In the preferred embodiment shown, the spinning deck A comprises two spinning bath troughs 2 each of which extends the length of the maacsaasa chine and is accessible to the operators working on its respective side of the machine. The working faces of the machine may be provided with sash 3 to hinder the escape of vapors and gases to the atmosphere about the machine. Spinnerets 4 are arranged in the bath so that the filaments pass therethrough at an acute angle, preferably about 10 to 20, to the length of the machine, and proceed around the guides 5, each of which is preferably rotatablymounted with its axis substantially perpendicular tothe plane containing both the approaching and departing courses of the filaments with respect thereto, from which they proceed upwardly to and around the thread-advancing devices 6 carried by the supporting means 20a extending the length of the machine in the region intermediate of the two working faces and back of the trough 2. The devices 8 which may comprise simply the godets I and rotatable guides 8 canted with respect thereto, are disposed in the region extending between the working face and the supporting means above the trough 2, and they may partially or even completely overhang the trough 2, though as specifically shown, they are disposed late-rally offset from a position directly above the trough and away from the adjacent working face.

From the devices 6, the threads proceed to similar thread-advancing devices 6a carried on the other side'of the supporting means preferably at approximately the same level as the devices i but oflset longitudinally of the machine from the respective devices 6 from which the respective threads'proceed so that the paths of the threads between devices 6 and 61: make an acute angle to a vertical plane extending longitudinally of the machine. The devices 6a comprise godets 9 and the rotatable rollers 9a canted with respect thereto from which they descend substantially vertically through suitable passages l provided in the frame and through suitable passages ll provided in the floor to the liquid treatment deck B. It will be noted that the courses taken by each thread from its respective guide to its device 6, from its device 6 to the device comprising godet 9 and roller 9a and then downwardly therefrom, lie either substantially in a single plane or in a plurality of planes which are substantially parallel to one another. As shown,

each pair of thread-advancing devices (that is,

6 and 6a) associated with a given thread are disposed so that they project in opposite directions but substantially at right angles to the vertical plane containing the path of the thread therebetween. As a result of these relationships as well as that established between the guide 5 and the courses of thread approaching and departing therefrom, the thread is substantially free of any tendency to slide axially of the periphery of the several guides and godets as it is withdrawn therefrom.

The arrangement in deck A facilitates lacing which may be accomplished by having one operator on one side of the machine to lace up the thread-advancing devices 6 and another to receive the thread from the first and to lace up the devices 6a. Since the devices extend from the supporting frame 20a in opposite directions, the travel of the thread in a helical path about the devices 6 and 6a is always from the sup ported end to the free end of the thread-advancing devices when they are cantilever as shown and always toward the operator who tends the particular row of devices. When both sides of the machine are provided with a coagulating trough and spinnerets, the operators may work together even more eiliciently by lacing up adjacent units, both operators taking threads from a spinneret and after lacing the respective guides 5 and devices 6, exchanging the leading ends of the threads and the lacing up device 6a.

In deck B, each of the threads proceeds over one, or in succession over a plurality of, threadadvancing, thread-storage devices which are represented as the thread-advancing reels l2a, l2b, I2n on each of which the thread is subjected to a different liquid treatment. As the threads are discharged from deck B, they proceed substantially vertically downwardly through suitable passages through the floor and/or frame of the machine to the deck C in which each thread proceeds about a thread-advancing device i2 which may comprise the steam-heated, driven drum l3 and the rotatable idler l4 canted with respect thereto. From its respective drier, each thread then proceeds to any suitable collecting device l5, shown specifically as a ring twisting device. Any other type of twister is used, such as a cap twister, spinning bucket, and the like, or the threads may be collected by simply winding without twisting.

With reference again to deck A, and in particular to Figure 4, the godets 1 on both sides of the machine are driven by a common shaft l6 running the length of the machine and gears l1 and I8 while the godets 9 are driven by a similar shaft i9 by similar gears l1 and I8. The shafts l6 and I9 may be driven at the same speed or at different speeds. By driving godets 9 at higher speed than godets 1, the threads may be stretched as they pass therebetween. This driving means is enclosed and protected in the housing or supporting frame 20a.

A plurality of troughs 20 carried on the supporting frame 20a may be arranged at an acute angle to the central plane of the machine to correspond to the direction of travel of the threads. These may be fed by the nozzles 2| arranged above the channels 22 which connect alternate pairs of adjacent troughs 20. The troughs 20 are provided at each of their ends with overflow boxes which are connected to the common drain line 23 and the end walls of which are slotted from the top to permit passage of the threads entering and leaving the troughs without permitting the liquid in the trough to flow over the machine.

A plurality of supply lines 24a, 24b, and Mn supply the several liquids to the liquid-treating devices l2a, I2b, and I211. respectively, nozzles 25 being connected thereto by branch lines. Troughs 26a, 26b, 2612, are positioned below the devices l2a, i2b, and I211. to collect the liquids which drain therefrom which may then be recirculated. These troughs may be notched at 27 to permit the thread being discharged from one of the devices l2 to pass down to the next device below, suitable guides 28 being provided, where necessary, to control the disposition of the thread on the devices between which the transfer occurs.

Suitable pairs of drive shafts 29a, 29b, 2911 running the length of the machine are provided to drive the devices I2. The pair of shafts it serve to drive the drums i3 through hollow stub shafts which may be supplied with steam from the steam header 3|.

Numerous advantages are obtained by the arrangement constituting the continuous spinning machine of this invention. When it is desired to stretch the filaments shortly after their through a liquid bath, such as a plasticizing bath of hot water, hot dilute acid, or the like, in the horizontal portion of their travel. The use of a horizontal bath at this stage provides eflicient use of the treating liquid without sloppiness.

The direction of the filaments as they cross over through their horizontal paths at an acute angle to the central plane ofthe machine provides a great saving of space and places the various devices within easy reach of the operators. This also makes it possible to use a long immersion stretch bath and still have everything within easy reach of the operators. The machine may be used for wet spinning cuprammonium cellulose, cellulose esters, vinyl resins, and the like but is particularly valuable for the spinning of viscose.

By directing the threads from opposite sides of the machine in parallel paths across the central plane at an acute angle so that those from one side alternate with those from the other side, it is possible to use narrow spinning baths and obtain long immersion therein, such as by guiding the threads at an acute angle to the length of the machine, thereby avoiding extreme width in the machine resulting from the use of wide spinning baths. Again, this same arrangement of the spinning section or deck makes it possible to make a maximum use of the space and supporting framework needed by the other sections of the machine, such as the liquid-treating, drying, and collecting sections thereof without inordinate width or excessive crowding in the spinning section.

While preferred embodiments of the invention have been disclosed, it is to be understood that changes and variations may be made without departing from the spirit and scope of the invention as defined by the appended claims.

I claim:

1. A machine for the continuous wet spinning and treating of artificial threads comprising a spinning section having two troughs for receiving a coagulating liquid extending the length of the machine, being laterally spaced apart, and being disposed adjacent the two lateral faces of the spinning section of the machine, spinnerets in the troughs, means comprising two rows of thread-advancing devices disposed in the region above the level of the troughs and intermediate their outer walls for withdrawing the threads from the spinnerets and directing them in said region through substantially parallel horizontal paths crossing the central plane of the spinning section of the machine at an acute angle, said means being arranged to discharge the several threads downwardly through a zone of the spinning section between the central plane thereof and the spinning bath trough on the lateral face of the machine other than that of the spinnerets from which the threads originated;

2. A machine for the continuous wet spinning and treating of artificial threads comprising a spinning section having two troughs for receiving a coagulating liquid extending the length of the machine, being laterally spaced apart, and being disposed adjacent the two lateral faces of the spinning section of the machine, spinnerets in the troughs, means comprising two rows of thread-advancing devices disposed in the region above the level of the troughs and intermediate their outer walls for withdrawing the threads from the spinnerets and directing them in said region through substantially parallel horizontal paths crossing the central plane of the spinning section of the machine at an acute angle, said means being arranged to discharge the several threads downwardly through a zone of the spinning section between the central plane thereof and the spinning bath trough on the lateral face of the machine other than that of the spinnerets from which the threads originated, and generally horizontal trough means arranged to receive the threads as they are directed through said substantially horizontal paths.

3. A machine for the continuous wet spinning and treating of artificial threads comprising a spinning section having two troughs for receiving a coagulating liquid extending the length of the machine, being laterally spaced apart, and being disposed adjacent the two lateral faces of the spinning section of the machine, spinnerets in the troughs, means comprising two rows of thread-advancing devices disposed in the region above the level of the troughs and intermediate their outer walls for withdrawing the threads from the spinnerets and directing them in said region through substantially parallel horizontal paths crossing the central plane of the spinning section of the machine at an acute angle of less than said means being arranged to discharge the several threads downwardly through a zone of the spinning section between the central plane thereof and the spinning bath trough on the lateral face of the machine other than that of the spinnerets from which the threads originated, and generally horizontal trough means arranged to receive the threads as they are directed through said substantially horizontal paths.

4. A machine for the continuous wet spinning and treating of artificial threads comprising a spinning section having two troughs for receiving a coagulating liquid extending the length of the machine, being laterally spaced apart, and being disposed adjacent the two lateral faces of the spinning section of the machine, spinnerets in the troughs, means comprising two rows of thread-advancing devices disposed in the region above the level of the troughs and intermediate their outer walls for withdrawing the threads from the spinnerets and directing them in said region through substantially parallel horizontal paths crossing the central plane of the spinning section of the machine at an acute angle, said means being arranged to discharge the several threads substantially vertically downwardly through a zone of the spinning section between the central plane thereof and the spinning bath trough on the lateral face of the machine other than that of the spinnerets from which the threads originated; an after-treatment section having two working faces and comprising a plurality of vertically superposed thread-advancing devices arranged below the spinning section to receive the threads discharged from the spinning section: a collecting section having two working faces and arranged substantially directly below the after-treatment section; the several threads passing through the devices on the lateral face of the after-treating and collecting sections opposite to the lateral face of the spinning section containing the trough from which the threads originated.

5. A machine for the continuous wet spinning and treating of artificial threads comprising a spinning section having two narrow troughs for receiving a coagulating liquid extending the length of the machine, being laterally spaced apart and disposed adjacent the two lateral faces of the spinning section of the machine, spinnerets disposed in the troughs, means adjacent the troughs and spaced longitudinally thereof from the spinnerets therein for guiding the threads issuing from the spinnerets at an acute angle to the length of the machine, means comprising two rows of thread-advancing devices disposed in the region above the level of the troughs and intermediate their outer walls for withdrawing the threads from the spinnerets about said guide means and directing them in said region through substantially parallel hori-.

zontal paths crossing the central plane of the spinning section of the machine at an acute angle, said means being arranged to discharge the several threads downwardly through a zone of the spinning section between the central plane thereof and the spinning bath trough on the lateral face of the machine other than that of the spinnerets from which the threads originated.

6. A machine for the continuous wet spinning and treating of artificial threads comprising a spinning section having two narrow troughs for receiving a coagulating liquid extending the length of the machine, being laterally spaced apart and disposed adjacent the two lateral faces of the spinning section of the machine, spinnerets disposed in the troughs, means adjacent the troughs and spaced longitudinally thereof from the spinnerets therein for guiding the threads issuing from the spinnerets at an acute angle to the length of the machine, means comprising two rows of thread-advancing devices disposed in the region above the level of the troughs and intermediate their outer walls for withdrawing the threads from the spinnerets about said guide means and directing them in said region through substantially parallel horizontal paths crossing the central plane of the spinning section of the machine at an acute angle, said means being arranged to discharge the several threads downwardly through a zone of the spinning section between the central plane thereof and the spinning bath trough on the lateral face of the machine other than that of the spinnerets from which the threads originated, and generally horizontal trough means arranged to receive the threads as they are directed through said substantially horizontal paths.

'7. A machine for the continuous wet spinning and treating of artificial threads comprising a spinning section having two narrow troughs for receiving a coagulating liquid extending the length of the machine, being laterally spaced apart and disposed adjacent the two lateral faces of the spinning section of the machine, spinnerets disposed in the troughs, means adjacent the troughs and spaced longitudinally thereof from the spinnerets therein for guiding the threads issuing from the spinnerets at an acute angle to the length of the machine, means comprising two rows of thread-advancing devices disposed in the region above the level ofthe troughs and intermediate their outer walls for withdrawing the threads from the spinnerets about said guide means and directing them in said region through substantially parallel horizontal paths crossing the central plane of the spinning section of the machine at an acute angle, said means being arranged to discharge the several threads downwardly through a zone of the spinning section between the central plane thereof and the spinning bath trough on the lateral face of the machine other than that of the spinnerets from which the threads originated, and generally horizontal trough means arranged to receive the threads as they are di-,

rected through said substantially horizintal paths, said withdrawing and directing means comprising means for stretching the threads as they pass through the trough means.

8. A machine for the continuous wet spinning and treating of artificial threads comprising a spinning section having two troughs for receiving a coagulating liquid extending the length of the machine, being laterally spaced apart, and being disposed adjacent the two lateral faces of the spinning section of the machine, spinnerets in the troughs, means comprising two rows of thread-advancing devices disposed in the region above the level of the troughs and intermediate their outer walls for withdrawing the threads from the spinnerets and directing them in said region through substantially parallel horizontal paths crossing the central plane of the spinning section of the machine at an acute angle, said means being arranged to discharge the several threads downwardly through a zone of the spinning section between the central plane thereof and the spinning bath trough on the lateral face of the machine other than that of the spinnerets from which the threads originated, and generally horizontal trough means arranged to receive the threads as they are directed through said substantially horizontal paths, said withdrawing and directing means comprisin means for stretching the threads as they pass through the horizontal paths.

9. A machine for the continuous wet spinning and treating of artificial threads comprising a spinning section having two narrow troughs for receiving a coagulating liquid extending the length of the machine, being laterally spaced apart, and disposed adjacent the two lateral faces of the spinning section of the machine, spinnerets disposed in the troughs, means adjacent the troughs and spaced longitudinally thereof from the spinnerets therein for guiding the threads issuing from the spinnerets at an acute angle to the length of the machine, supporting means extending the length of the machine disposed in the region above and intermediate the outer walls of the two coagulating troughs, generally horizontal trough means carried by the supporting means; a plurality of thread-advancing devices arranged in said region on each side of the supporting means and adjacent the trough means carried thereby for drawing the threads from the spinnerets; additional thread-advancing devices in said region on each side of the supporting means and adjacent the trough means carried thereby for drawing the threads in substantially horizontal paths from the first-mentioned thread-advancing devices through the trough means, means for operating the second-mentioned thread-advancing devices at higher speed than the first so that the threads are stretched as they proceed through the trough means, the second-mentioned thread-advancing devices being arranged to discharge the several threads downwardly through a zone of the spinning section between the central plane thereof and the spinning bath trough on the lateral face of the machine other than that of the spinnerets from which the threads originated.

10. A machine for the continuous wet spinning and treating of artificial threads comprising a spinning section having two narrow troughs for receiving a coagulating liquid extending the length of the machine, being laterally spaced apart, and disposed adjacent the two lateral faces of the spinnnig section of the machine, spinnerets disposed in the troughs, means adjacent the troughs and spaced longitudinally thereof from the spinnerets therein for guiding the threads issuing from the spinnerets at an acute angle to the length of the machine, supporting means extending the length of the machine disposed in the region above and intermediate the outer walls of the two coagulating troughs, generally horizontal trough means carried by the supporting means; a plurality of thread-advancing devices arranged in said region on each side of the supporting means and adjacent the trough means carried thereby for drawing the threads from the spinnerets; additional thread-advancing devices in said region on each side of the supporting means and adjacent the trough means carried thereby for drawing the threads in substantially horizontal paths from the first-mentioned thread-advancing devices through the trough means, means for operatin the second-mentioned threadadvancing devices at higher speed than the first so that the'threads are stretched as they proceed through the trough means, the secondmentioned thread-advancing devices being arranged to discharge the several threads substantially vertically downwardly through a zone of the spinning section between the central plane thereof and the spinning bath trough on the lateral face of the machine other than that of the spinnerets from which the threads originated; an after-treatment section having two working faces and comprising a plurality of vertically superposed thread-advancing devices arranged below the spinning section to receive the threads discharged from the spinning section; a collecting section having two working faces and arranged substantially directly below the after-treatment section; the several threads passing through the devices on the lateral face of the after-treating and collecting sections opposite to the lateral face of the spinning section containing the trough from which the threads originated.

11. A machine having two working faces for continuously producing artificial thread comprising a housing extending throughout the length of the machine intermediate of the working faces thereof, a plurality of spinnerets spaced at intervals along one working face of l spinnerets to a level above the housing, means in the housing for driving at least some of the devices, a plurality of thread-advancing devices mounted on the housing and projecting from the other side of the housing toward the other working face of the machine, means in the housing for driving the thread-advancing devices to advance thread from their ends near the housing to their ends away from the housing, and trough means supported on top of the housing for applying a liquid to the threads as they pass from the thread-handling devices to the threadadvancing devices.

12. A machine for the continuous wet spinl0 ning of artificial threads comprising an upper and a lower section; the upper section having two working faces for continuously producing artificial thread comprising a housing extending throughout the length of the machine intermediate of the working faces thereof, a plurality of spmnerets spaced at intervals along one working face of the machine, means for apply-- ing a coagulating liquid to the spinnerets, a plural ty of thread-handling devices mounted on one side of the housing and projecting therefrom toward the first-mentioned working face of the machine for withdrawing the threads upwardly from the spinnerets to a level above the housing, means in the housing for driving at least some of the devices, a. plurality of threadadvancing devices mounted on the housing and projecting from the other side of the housing toward the other working face of the machine, means in the housing for driving the threadadvancing devices to advance thread from their ends near the housing to their ends away from the housing, said thread-advancing devices being arranged to discharge the thread directly downwardly therefrom to the lower section, and

trough means supported on top of the housing for applying a liquid to the threads as they pass from the thread-handling devices to the threadadvancing devices.

13, A machine having two working faces for continuously producing artificial thread comprising a housing extending throughout the length of the machine intermediate of the working faces thereof, a spinning bath compartment extending longitudinally of the machine adjacent one working face thereof, a plurality of spinnerets in the bath compartment spaced at intervals along one working face of the machine, a plurality of thread-handling devices mounted on one side of the housing and projecting therer from toward the first-mentioned working face of the machine for withdrawing the threads upwardly from the spinnerets to a level above the housing, each of said devices being disposed above the bath on a horizontal axis inclined obliquely to the length of the machine and perpendicular to a plane including the course of filaments extending between the spinneret and the device and to a plane including the course of the filaments ultimately discharged from said device, means in the housing for driving at least some of the devices, a plurality of threadadvancing devices mounted on the housing and projecting from the other side of the housing toward the other working face of the machine on horizontal axes parallel to those of the thread-handling devices, each thread-advancing device being spaced from a corresponding thread-handling device in a direction longitudinally of the machine and said threadadvancing device having a thread-receiving portion directly opposite the thread-discharging portion of the corresponding thread-handling device, such portions lying in a common horizontal plane and in a common vertical plane at right angles to the axes of the corresponding devices, and means in the housing for driving the thread-advancing devices to advance thread from their ends near the housing to their ends away from the housing.

14. The machine of claim 13 in which the upper level of the thread-handling devices is at a level higher than the housing and is at sub- 11 stantlully the same height as the upper level Number of the thread-advancing devices. 2,184,144 RICHARD W. STANLEY. 2,203,793 2,233,418 REFERENCES CITED 2 249 79 The following references are of record in the 2,262,097 file otthis patent:

UNITED STATES PATENTS Number Name mu m Number 1,617,118 Jessen Rh. 8, 1927 515,127 2,078,339 Ptannenstlel et a1. Apr. 27, 1937 859,342

Name Date Huttinger Dec. 19, 1939 Lovett June 11, 1940 Kline et a1. Mar. 4, 1941 Terrence et a1. July 22, 1941 Costa Nov. 11. 1941 FOREIGN PATENTS Country Date 4 Great Britain Nov. 27, 1939 France June 27, 1929 

1. A MACHINE FOR THE CONTINUOUS WET SPINNING AND TREATING OF ARTIFICIAL THREADS COMPRISING A SPINNING SECTION HAVING TWO TROUGHS FOR RECEIVING A COAGULATING LIQUID EXTENDING THE LENGTH OF THE MACHINE, BEING LATERALLY SPACED APART, AND BEING DISPOSED ADJACENT THE TWO LATERAL FACES OF THE SPINNING SECTION OF THE MACHINE, SPINNERETS IN THE TROUGHS, MEANS COMPRISING TWO ROWS OF THREAD-ADVANCING DEVICES DISPOSED IN THE REGION ABOVE THE LEVEL OF THE TROUGHS AND INTERMEDIATE THEIR OUTER WALLS FOR WITHDRAWING THE THREADS FROM THE SPINNERETS AND DIRECTING THEM IN SAID REGION THROUGH SUBSTANTIALLY PARELLEL HORIZONTAL PATHS CROSSING THE CENTRAL PLANE OF THE SPINNING SECTION OF THE MACHINE AT AN ACUTE ANGLE, SAID MEANS BEING ARRANGED TO DISCHARGE THE SEVERAL THREADS DOWNWARDLY THROUGH A ZONE OF THE SPINNING SECTION BETWEEN THE CENTRAL PLANE THEREOF AND THE SPINNING BATH TROUGH ON THE LATERAL FACE OF THE MACHINE OTHER THAN THAT OF THE SPINNERETS FROM WHICH THE THREADS ORIGINATED. 